<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Document</title>
    <style type="text/css">
        .box{
            width: 100px;
            height: 100px;
            background-color: gold;
            /* transition: width 1s ease 200ms, height 1s ease 1s, background-color 1s ease; */
            transition: all 1s ease;
        }
        .box:hover{
             width: 600px;
             height: 500px;
             background-color: red; 
        }
    </style>
</head>
<body>
    <div class="box"></div>

</body>
</html>